Ethereum Network

Ethernodes: Network status.Etherchain.org: Statistics and blockchain exploration for the Ethereum network.Ether.camp: A sophisticated Ethereum blockchain explorer for developersEtherscan.io: A blockchain explorer for Ethereum. Ethstats: A page that tracks the Ethereum network.

Security

Sidechains

Storage

BigChain*3: Massive scale and throughput - could be a game changer. BigChain White Paper (2016): Everything you ever wanted to know about decentralized storage.The Interplanetary File System*3; storage that can’t be killed and lasts foreverIPDB*2: The decentralized databaseFileCoin*3: A currency designed to enable a decentralized storage networkKeybase*3: Storage system with its own set of protocolsMaidsafe*4: A P2P storage system started in 2006.SIA*4: An "enterprise grade" decentralized storage system. Storj*3: Cloud- and blockchain-based encrypted P2P storage - already has over 3 petabytes online!